Liquid impelling or circulating device.



W. W. CASTLE.

LIQUID IMPELLING OR. GIRGULATING DEVICE.

APPLICATION FILED JULY 10,1908.

Patented July 25, 1911.

2 SHEETS-SHEET l.

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LIQUID IMPELLING 011 GIROULATING 133111013.

APPLICATION FILED JULY 10, 1908.

999,092. Patented July .25, 1911.

2 SHEETS-SHEET 2.

a citizen of the UNITED STATES PATENT OFFICE.

WILLIAM W. CASTLE, OF EAST WEYMOUTH, MASSACHUSETTS, ASSIS-NOR TO WILLIAMJ GARLIN AND DANIEL J'. KILEY, BOTH OF BOSTON, MASSACHUSETTS.

LIQUID IMPELLING 0R OIRGULATIN G DEVICE.

To all whom it may concern:

Be it known that I, WILLIAM W. CASTLE, United States, residin in EastWeymouth, county of Norfolk, ommonwealth of Massachusetts, have inventedcertain new and useful Improvements in Liquid Impelling or CirculatingDevices, of which the following is a specification, reference being hadto the drawings accompanying the same and forming a part thereof.

This invention relates to that class of devices for causing amechanically induced circulation of liquid in pipes or mains, and hasfor its object to provlde a device of this character which will besupported by the pipe or main, as also to provide the circulating devicewith a valve which will auto matically change its position so as toclose the direct passageway for the normal flow when the circulatingpropeller is started, but will move automatically to open the directpassageway when the propeller stops, and in so doing will close theby-pass inlet to said direct passageway. In'the accompanying drawingsFigure 1 is a longitudinal section of a liquid circulating deviceembodying the present invention.- Fig. 2 is an end view thereof, andFig. 3 is a detail view of an automatic valve which is employed.

Referring to the drawings, 16 denotes a section of a pipe or main forthe direct or natural flow of the liquid, and which, in such normalflow, willenter at the inlet end 1, and escape at the outlet end 2- ofthe pipe or casing 16. Supported by the pipe or casing 16 is a casing 5provided wit-h hollow bosses 12 and 13 which register with similarbosses 15 and 14 on the casing 16. The boss 15 is provided with, aflange 3, the boss 14 with a flange 4, the boss 12 with a flange 6, andthe boss 13 with a flange 7, these bosses being rigidly secured togetherby means of bolts 8 passing th'erethrough, so as to rigidly attach thecasing 5 to the .pipe or casing 16.

The casing 5, which serves as a by-pass from and to the chamber of thepipe section 10, is provided at one end with a head 19 removably securedthereto and having an inwardly extending boss 18 which serves as abearing for one end of the shaf t17 carrying the rotary propeller 11arranged in the contracted portion 10 of the chamber 9 of said casing 5,said boss 18 being preferably provided with a bushing 20. Removably atSpecification of Letters Patent. Application filed. July 10, 1908.

Serial N 0. 442,985.

tached .to theopposite end of the casing 5 is a frame 29 having aninwardly extending boss 23 which affords one of the bearings for theshaft 17 andwhichis preferably provided with a bushing 24, the saidshaft also having a bearing in the part 30 of said frame 29 and beingprovided at its outer end, which projects beyond said frame 29, with adriving pulley 32. The attachment of the frame 29 to the casing 5 ispreferably effected by screws flaigde 28 with which the sad frame ispro- V1 e Patented July 25, 19111. I

passing through the A thrust bearing for the propeller shaft 17 ispreferably provided in the head 19, said thrust bearing, as hereinshown, comprising a plug 21, screwed into said head, and a steel thrustwasher 22 interposed be-' tween the end of said shaft 17 and said plu Awater-tight packing for the shaft 17 is preferably provided within theframe 29, said packing comprisinga packing box 25, a packing gland 26,and a packing nut 27 threaded on the box 25 and engaging the gland 27for the purpose of properly compressing the packing in the packing box.The frame 29 is provided at its inner end with an annular lip 33 whichfits in a turned bearing 34 in the casing 5, thereby ermitting the saidframe to be turned to different angles, if desired.

The casing or'pipe section 16 is provided with a transverse portion orflange 35 closed 'on each side by disks secured thereto by bolts -36,the said portion 35 forming a seat 37 for a valve 38 which is providedwith a suitable stem ,rotatably' mounted in a bearing 39.

The pipe or casing 16 is provided with a boss 40 to which is secured aring.42 inside of which is a glass disk through which an index orpointer 43, movable with the valve '38,

may be observed, said index or pointer indicating the position of thevalve. Attached to the valve 38 is a counterpoise or weight 44 which isdesigned to normally hold the valve in the position denoted by dottedlines in Fig. 1, to close the passage from the boss 14 into the chamberof the pipe or casing 16, the said valve being pivoted at 45 so that itmay freely swing to the positions denoted in full and dotted lines.

.When the propeller 11 is not in motion the liquid will have a direct ornormal flow through the chamber ofthe pipe or casi'ng 16, the valve38being-at such time in the position denoted in dotted lines in Fig. '1,and in which position it will be heldjbythe weight 44, as also by theflow of'the liquid. When, however, the propeller 11 is set in mot-ion itwill cause an induced circulation through the chamber of the casing 5,the fluid, entering at 1 into the pipe 16, flowing through the outletboss 15 of the said casing 16 to the chamber of the casing 5, and thenceoutward from said casing 5 through the out Q let boss 13 and into thechamber of the pipe or casing 16 through the inlet boss 14 of thelatter. This induced circulation of the liquid will automatically forcethe valve 38 downward from the position shown in dotted llIlGS'lIl Fig.1 to the position shown in full lines therein, thereby closing the mainor direct passageway through the pipe or casing 16 and opening thepassageway from the chamber of the casing 5 into the exit end 2 of thesaid pipe or casing 16, thus causing induced or forced circulation ofthe liquid through the main or pipe with which the pipe section orcasing 16 is connected and of which it normally forms a part in thedirect circulation of the liquid.

Owing to the fact, as hereinbefore indicated, that the casing for theinduced circulation and the bearings for.- the propeller shaft aresupported by the section'or casing 16 forming part of the main or pipefor the normal or direct flow of the liquid, it is evident that anyexpansion or contraction of the pipe or main of which the pipe 16 formsa part will not disturb the bearings for the propeller shaft 17. Thethrust bearing for the shaft 17 afiorded by the plug 21 and i111terposed steel washer 22 will efiectively prevent any endwise'movementof said shaft in one direction, while the collar 31, pinned to the saidshaft and bearing against a portion of the frame 29, serves as a stopwhich will effectively revent any endwise movement of said shait in theopposite direction, and the said shaft will thus be securely held inbearings which will not be thrown out of alinement byany contraction orexpansion of the pipe or main by which the propeller casing issupported. It will thus be seen that the casin 5, removably secured toor mounted on t e pipe section 16, afi'ords a self-contained device forthe propeller shaft and its bearings, so that it may be readily placedin or dismounted from its operative position and' is convenientlyaccessible for repairs or adjustment; while the propeller shaft, withits thrust hearing at one end, may be conveniently placed. in workingposition or may be readily removed when desired without'disconnectingthe device Jf IOm the piping upon which it is" mounted. Moreover byconstructing theimproved pro-- pelling device in such a' manner that itis supported by the piping, or bya section of the pipe-or main throughwhich the flow aeaoaa of liquid normally takes lace, the said propellingor circulating evice may be at tached to the pipe or main at anyconvenient point without regard to whether or not there is anyconvenient means for providing a fixed supporting foundation for afoundation plate.

Having thus described my invention I claim and desire to secure byLetters Patent:

1. In a liquid propellingdevi'ce, the combination of a casing formed tobe attachedto pipes forthe conveying of liquids, having a chamber formedto provide a direct conduit through it for the flow of liquids, andhaving inlet and outlet openings formed in one side; a by-pass chamberattached to said casing having inlet and outlet openings; bearings inthe ends of said by-pass casing; a propeller shaft wholly supported byand rotatably mounted in said bearings; a propeller mounted on saidshaft located in the by-pass chamber; means mounted on the outer end ofsaid shaft for rotating the same; and a by-pass valve mounted toautomatically close the direct flow liquid conduit when the propeller isoperative and to 2111- tomatically close the by-pass conduit when thepropeller is inoperative.

2. In a liquid circulating device, the combination with a pipe sectionforming part of a conduit for the direct flow of the liquid, of a casingsupported by said pipe section and the chamber of which has inlet andoutlet openings communicating with the chamber of the said pipe section,and which casing is provided with bearings, the chamber of said casingforming a 'by-pass for'the liquid, a rotary liqu1d-propelling devicemounted in the said by-pass casing, a shaft by which said rotary liquidpropelling device is carried and which rotates in said hearings in thesaid by-pass casing, and an automatic valve which is normally held so asto close a passageway from the by-pass casing to the said pipe section,but which will be automatically moved toa position to close the directpassageway through the pipe section and to open the passageway from thesaid by-pass casing when the said rotary liquid-propelling device is inoperation.

3. In a liquid circulating device, the com bination witli'a pipe sectionforming part of a conduit for the direct flow of thiliquid, of a casingsupportedby said, pipe section and the chamber of which has inlet andoutlet openings communicating with the chamber of the saidpipe section,and which casing is provided with bearings, the chamber vice is carried'and whichmotates in said hearin s in the said by-pass casing, a valvewhich is normally held so asto close a pasa by-pass for the sageway fromthe by-nass casing to the said pipe section but which will beautomatically moved to a position to close the direct passageway throughthe pipe section and to open the passageway from the said by-pass casingwhen the said rotary liquidpropelling device isin operation, and avisible index movable with said automatic valve.

a. In a fluid circulating device comprisin a main'or direct passagewayfor the norma flow of, liquid, and a passageway for induced flow, thecombination with a propeller rotatively mounted in the last-namedpassageway, of'a valve arranged to open and close the said main ordirect passageway balance for said valve to cause it to be held 20normally open vin said main or direct passageway and in a position toclose said port.

In testimony whereof, I have hereunto set my hand, in the presence oftwo subscribingwitnesses, this the 7th day of July, A. D. 25

WILLIAM W. CASTLE. Witnesses:

CHAS. W. WoLcoTT, RICHARD P. ELLIOTT.

